"Water purification for plant operators, by George D. Norcom ... and Kenneth W. Brown ... First edition, fifth impression" (New York and London, McGraw-Hill book company, inc., 1942) has special t.p. and separate paging (x, 180 p.)
Bibliography: p. 173
Page 23,24 ripped.
between pg 122 and 123 fold out page tore out.